Pregnancy Diary

This is a popular pregnancy debate with many women across message boards and in pregnancy communities today. A pregnancy consists of the first, second and third trimester are known by most people. The definition of a trimester is “A period or term of three months”. If this is the case, why do so many people consider themselves pregnant for ten months?

The answer is simple, pregnancies are considered full term at 40 weeks, and many women count four weeks as a month while they are pregnant, making the result a ten month pregnancy. There are actually 4.33 weeks in a month, that a third of a week tends to get lost in the pregnancy shuffle for much of us.To many women, when asked how pregnant they are, to answer in weeks instead of months, because pregnancy is generally a count down. “I am 22 weeks, only 18 weeks to go!”

The Lunar calendar, which is the four weeks it takes for the moon to go from a new moon, to a full moon and back again, would make a pregnancy last for ten months. While those that live by the Gregorian calendar. Neither of these calculations is exactly accurate.
The most common way to figure out your due date is to add nine months and seven days to the start date of your last menstrual period, which would actually be a week before you would have ovulated with a 28-day cycle.